Shuttle for narrow ware looms



y 1933. E. R. HOLMES 1,906,966

SHUTTLE FOR NARROW WARE LOOMS Filed Aug. 22. 1931 Patented May 2, 1933 ELBRIDG-E B. HOLMES, {3F WORCESTER, MASSACHUSETTS, ASSIGNOR T0 GROMPTON & KNOWLES LOOM. WGRKS, OF WORCESTER, lVIASSAOI-IUSETTS, A CDRPORATION OF MASSACHUSETTS SHUTTLE FOR NARROW WARE LOOMS Application filed. August 22, 1931. Serial No. 558,767.

This invention relates to narrow ware looms in which a plurality of shuttles are separately moved back and forth along defined guideways by positive actuating mechanism. As such shuttles are increased 1n size and weight, the overhang becomes excessive and the operation thereof becomes more or less unsatisfactory.

It is the general object of my invention to provide a construction of narrow ware shuttle having greatly increased bearing surfaces, which surfaces are also positioned to more effectively support the shuttle. I also provide improved guideways for the shuttles and improved means for preventing outward displacement of the shuttle.

My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claim.

A preferred form of the invention is shown in the drawing, in which Fig. 1 is a. front elevation of a portion of a narrow ware loom;

Fig. 2 is a sectional side elevation thereof, and

Fig. 3 is an enlarged transverse sectional elevation of the shuttle.

Referring to the drawing, I have shown portions of a narrow ware loom of a commercial type, including a lay 10 having a longitudinally movable rack bar 11 slidable thereon and engaging a plurality of pinions 12 by which the shuttles S are positively reciprocated.

The usual driving mechanism, not shown, is provided for swinging the lay back and forth and for moving the rack bar 11 alternately in opposite directions.

Frame members 20 are secured to the lay 10 by bolts 21 and extend upward in spaced relation along the back of the lay. At their upper ends, the frame members 20 are secured to a cross bar 22, which also supports the upper ends of a plurality of reeds B. Upper and lower guide bars 30 and 31 are secured to the frame members 20 in vertically spaced relation, and a retaining device in the form of an intermediate guide bar 33 of T-shaped cross section is secured to the frame members 20 between the guide bars 30 and 31.

The shuttle S is provided with an upper bearing surface 40 of extended area and with a lower bearing surface 41 of still more eX- tended area. The lower rear corner of the shuttle S is cut away to provide a recess for a rack bar 42, to be engaged by the pinions 12.

The rear wall of the shuttle is also provided Xith a T-shaped recess or longitudinal groove WVhen the shuttle S is assembled with the lay, the upper bearing surface 40 of the shuttle is engaged by the upper guide bar 30, the lower bearing surface 41 of the shuttle is engaged by the lower guide bar 31, the intermediate guide bar 33 fits loosely in the T- shaped recess M, and the rack 42 is positioned for engagement by the pinions 12. g

It will thus appear that the weight of the shuttle S is supported by the lower guide bar 31, which is of substantial width and extends nearly to the transverse median line of the shuttle. The guide bar 30, engaging the bearing surface 40 of substantial area at the top of the shuttle, prevents upward or angular displacement of the shuttle, and the T-shaped guide bar 33 prevents direct forward movement of the shuttle.

The shuttle is thus securely held from displacement in any direction and the weight of the shuttle is supported upon a largely increased bearing surface and entirely independent of the T-shaped guide bar 33. The

overhanging weight of the shuttle is thus efiectively taken care of and the life of the shuttle and of the supporting parts is greatly prolonged.

It will also be noted that the guide bar 33, having no weight supporting function, may be made of smaller dimensions than has been heretofore required, thus reducing the necessary thickness of the back wall of the shuttle S.

Having thus described my invention and and lower shuttle guide-bars mounted thereon and provided with fiat continuous bearing surfaces, a shuttle having flat continuous upper and lower bearing surfaces engaged by said bearing surfaces of said upper and lower guide-bars, said shuttle having also an undercut recess in its back wall, and a T-shaped intermediate guide-bar mounted on said lay and preventing forward displacement of said shuttle, said intermediate guide-bar fitting loosely in said undercut recess but sustaining no substantial part of the weight of the shuttle.

In testimony whereof I have hereunto aflixed my signature.

ELBRIDGE R; HOLMES. 

